<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="edu.sctu.User" %><%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/3/26
  Time: 15:49
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%
    if (session.getAttribute("username")==null){
        //跳转
        response.sendRedirect("login.jsp");
    }
%>

<style type="text/css">
   table{
       border-collapse: collapse;
   }
    td{
        border: 1px solid #000;
        padding: 10px;
    }
</style>

<!--include动作-->
<jsp:include page="header.jsp"></jsp:include>


    <table>
        <thead>
        <tr>
            <td>编号</td>
            <td>姓名</td>
            <td>密码</td>
            <td>删除操作</td>
            <td>更新操作</td>
        </tr>
        </thead>
        <tbody>
        <%

            List<User> list=new ArrayList<User>();

//            User chen = new User();
//            chen.id=1;
//            chen.username="chengongsuo";
//            chen.password="123";

            //3+1
            Connection connection=null;
            Statement statement=null;
            ResultSet resultSet=null;

            String sql="select * from t_users";

            Class.forName("com.mysql.jdbc.Driver");

            connection = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                    "root",
                    "123456"
            );

            statement =connection.createStatement();
            resultSet =statement.executeQuery(sql);


            while (resultSet.next()){
                int id = resultSet.getInt(1);
                String username = resultSet.getString(2);
                String password = resultSet.getString(3);

                User u = new User();
                u.setId(id);
                u.setUsername(username);
                u.setPassword(password);
                list.add(u);
            }
            resultSet.close();
            statement.close();
            connection.close();
//            list.add(chen);

            pageContext.setAttribute("list",list);
        %>
<c:forEach var="user" items="${list}">
    <tr>
        <td>${user.id}</td>
        <td>${user.username}</td>
        <td>${user.password}</td>
        <td><a href='deleteUserHandler.jsp?id="+user.id+ "'>删除</a></td>
        <td><a href='userUpdate.jsp?id="+user.id+"&username="+user.username+"&password="+user.password+"'>更新</a></td>
    </tr>
</c:forEach>




        </tbody>
    </table>

<!--include 指令-->
<%@include file="footer.jsp"%>

</body>
</html>
